Method for processing delay coking liquid hydrocarbons with gas fractional distillation apparatus
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 孙海兵
- Publication Date
- 2008-12-10
- Estimated Expiration
- Not applicable · inactive patent
Abstract
Description
Technical field
[0001] The method relates to a method for pretreating liquid hydrocarbons produced by a delayed coking unit, and then processing them as raw materials for a gas fractionation unit to produce propylene, propane and carbon four fractions. Background technique
[0002] The liquid hydrocarbons produced by the delayed coking unit contain a certain concentration of propylene, and the sulfur content is also relatively high, and the sulfur forms are complex, including mercaptan, carbonyl sulfide, sulfide, etc., first use amine liquid to desulfurize and then use alkali After liquid sweetening, there is still a high sulfur content. In this way, if it is not further processed, it is directly sent to the gas fractionation unit as a raw material for separation; or mixed with liquid hydrocarbons from the catalytic cracking unit and then sent to the gas fractionation unit for separation, the sulfur content in the product propylene of the gas fractionation unit will exceed t...